The Cytokine RANKL Produced by Positively Selected Thymocytes Fosters Medullary Thymic Epithelial Cells that Express Autoimmune Regulator

Yu Hikosaka, Takeshi Nitta, Izumi Ohigashi, Kouta Yano, Naozumi Ishimaru, Yoshio Hayashi, Mitsuru Matsumoto, Koichi Matsuo, Josef M. Penninger, Hiroshi Takayanagi, Yoshifumi Yokota, Hisakata Yamada, Yasunobu Yoshikai, Jun ichiro Inoue, Taishin Akiyama, Yousuke Takahama